Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e03b791ab75db7933b2423f495e7025412f63645c4b77613336a044694d1d887' 
  AND token = 'aC53H+jEtg6j5ifzlup2G9iHEfg9ttA7572Ryz/dLJI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}